Method of constructing sunken concrete structures.



W. H. FAHRNEY. METHOD or GONSTBUU'TING SUNKEN concnm's STRUGTURES.

APPLIGATION FILED AUG. 3, 190B.

Patented July 20; 1909.

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U i @MMM [lam I 3 W. H. FAHRNEY. METHOD OF CONSTBUUTlNG SUNKEN GONGRB'I'E STBUUTUBES. AYPLIGATION FILED AUG.3,190B.

928,646. Patented July 20. 1909.

4 SHEETS-SHEET 4.

vgate ll 'UNITEJ-) sra rrls PATENT OFFICE.

WILLIAM ll. l All ltNl-JY, l] tllltAGO, ILLINOIS, ASSIGNUR ()l ONE-Ila til 'lO LINUS ll. BRAND, OF EVANSTUN, ILLINOIS.

METHOD OF CONSTRUCTING SUNKEN CONCRETE STRUCTURES.

Specification of Letters Patent.

Patented July 20. 1909.

Application filed August 3, 1908. Serial No. 446,594.

To all whom it may concern:

lie it known that l,\\'n,|.i.\u ll. t annxnv, a eitiaen ot the United States, residing at thieago, in the county of (look and State of Illinois, have invented a new and useful improvement in Methods of (onstrtusting- Sunken Concrete Structures, of which the following is a speritieation.

My intention relates to an improvement.

, in the eonstruetion of sunken, and more especially sulnnerged, eonerete struetures, such as sea'walls, foundations, piers, and the like.

Apparatus suitable for the practice of my invention, and which is set. forth and elaimrd in my conenrreut application for.

Letters Patent, Serial No. 446,593, filed on the third day of August, 1908, is shown in the aeeompanying drawings, in which-- Figure l is a pers ieetive view of the easing of the mold employed; Fig. 2is a similar broken view of a suction-pipe and nozzle for emptying the mold of sand and water; Fig. 3 is a similar view showing, the parts of the mold-lining or sheeting in their unassembled relation; Fig. l is a plan view i'slu'nvinggthe complete mold in the rendition in whieh it appears in the. first operation involved in my improved method; Fig. 5 is a similar view showing the renditi n of the apparatus in the progress of the work, and Fig. ti is a bl't :.\'ll set-lion at line ti. Fig. 3, showing, hy way of a diagram, the progress of the work. The mold consists of a easing of suitable shape and dimensions. with one longitudinal sertion removed for elosure by a gate in the tirst operation ot the apparatus. and seetlional sheeting in the easing from \\'l1l('l\ the latter is separable. One torm oi the easing 7 suitable for my purpose. and \Vltit'll is that most commonly used. is best shown in Fig. 1. It is of rectangular eross-seetion, open at both ends, and formed, b v pret'ereiire, of sheet-steel with an opening'h along one side. The easing is shown to be reiu't'oreed at intervals by strengthening ribs E) t ndin about it and to he provided with a flexible hanger lt) by whirh to suspend it. for pluring and witlulrawing it. From a suitable erane, deri'iek or boom (not shown). The (l igs. -l and I) is formed with soekets 12 along its inner lateral edges and has secured upon its outer t'aee bars 17-3 of Z-shape in eross set-lion forming guide-sortiets 14 along its outer lateral edges; and it is also shownto he provided "with stops 16 along its inner face adjaeent to the soekets 12. Similar side sheets l7, l7, forming pairs, are provided in their upper ends with notehes 18 and holes 19 and along their front outer edges with angloirons 20 to engage the gate soekets 12, and along their eorres nmding sides toward their rear edges with bars 21 terminating in soelutheads 2; also to he engaged, as hereinafter deseribed, with the angledrons 20.

To ronstruet a eoiu-rete-wall .23, Fig. (3, in a body of water, the easing: T is placed on end in the selected position, whereupon the gate 11 is adjusted with its soekets 1.4 in engagement with the. in-turned flanges at the opening 8 to close the latter. Thereupon the nozzle 2t of a snetiou-pipe 25 is introdueed into the easing through its upper end and suction-force is applied to the pipe to suck the sand and water out of the easing until the latter is thereby sunk to the desired depth in the bed of the body of water. The easing being. thus emptied, the sidesheets 17 are introduced in plaee into it, being guided by the angle-liars 2t engaging the sorkets 12, and the rear ends ol the side sheets. abut against the bark of the asing and are hraeed in the corner-portions thereof by the soelwhheads 22 tilting the same. To brat-e the side-sheets and hold them in position. a eros+har it: provided with shoulders 27 near its opposite threaded ends is iutrodueed into the opposite notehes t8 and fas tened by nuts 28 applied to said ends, whereupon the baek-sheet .29 is introdured into the easing; between the side-sheets, being sustained by sinking it. like the other portions of the strneture, into the saint-bed 3t) and by hearing at its upper end against the rod 2(3. The mold thus formed is then titled with eonerete to till the space between the parts 11, t7 and 29 and thus form the initial. sec.- tion ot the wall to he construeted. hen this is done. a derriek or erane is applied to the hanger It) to raise the easing T, leaving the sheeting. whieh forms the lining of the mold. and gate in plat-e tor supporting the seetion whilethe ronerele is setting. Mean time, the rosin; is lowered into position :uljarent to the tirst IL'l'lltllt, being guided into plat-e by engagement ot the iuturned flanges along its opening; 8 with the backs'of the soeket heads 2:2, as shown at 3] in Fig. 5. The sand and water are then sueked out of the easing in the manner already deserilw't.

when other side-sheets 17 are introduced into place and secured by a bar 26, and another ack-sheet 29 is adjusted in place in the casing to form the mold, but with the open side 8 adjacent to the back-sheet 29 of the firstunoltlcd section. Before fillin the mold the second time with concrete the ack-sheet of the section previously molded is withdrawn and the mold is then filled with concrete. In thus repeating the filling of the mold, the still. green concrete of the first section may. fall down from it throu h the opening 8 and thus efi'ect bonding of t e fir t and second sections; and the filling wit concrete is continued to the desired height in the mold and also to add to the first section what it has lost by the falling of a portion from it. The method thus described of producing the required ,bonding between molded sections is the most practical known td me, but the bonding may be reduced in otherways without departure rom m invention. WVith the second section 0 the wall thus formed, the casin is withdrawn and placed in position relative toy the lastmolded section, when the sand and water are sucked out of it, the sheeting placed in position within it, the back-sheet 29 of the second section is removed for the bonding purpose, and the mold is for the third time filled with concrete; and these operations are repeated until the desired number of wall-sections have been molded in succession to produce the required length of wall.

When the concrete of a molded section becomes set so that it will stand without the support of the sheeting, the latter is withdrawn to be used with the casing in formin a fresh section, and, as will be understoo when the sheeting of the first-molded section is thus removed the ate 11 used to-eooperate with it is also wit drawn, the withdrawal being eii'ected by ap lying the derrick or crane to the sheets, a ter first removin" the bar 26.

n Fig. 6, which illustrates the bondingmethod described, the position of a wit drawn back-sheet 29 is indicated by dotted lines.

In the use of the terms bond and bonding herein I- define a structure built up from successive sections and which are united at their ends to the full height and width of each, thus producing a continuous and homogeneous structure, of uniform crossscctional area.

What I claim as new and desire to secure by Letters Patent is 1. The method of constructing a sunken concrete wall, and the like, which consists in sinking a mold into the bed of a body of water to extend above the surface thereof, filling concrete into said mold to form a section of the structure, similarly sinking adjacent to said section a mold while maintaining its interior closed to said section, removing the closing medium and thereby causing the still green concrete from. said section to enter said last-named mold, filling concrete into the latter to form a second section and bond it with the first, and. repeatin the said 0 erations of molding the second section an bonding in molding successive section's.

2. The method of constructing a sunken concrete wall, and the like, which consists in sinking a mold-casin into the bed of a body of water to exten above the surface thereof, lining said casing to form the mold, filling concrete into said mold to form a section of the structure, Withdrawing said casing frtnn' its linin 41nd again sinking it adjacent thereto an f-lining it to form a second mold, filling concrete into said second mold-to form the second section of the structure and bonding the two sections, and repeating the said operations of molding the second section and bonding in molding successive sections.

3. The method of constructing a. sunken concrete wall, and the like, which consists in sinking a mold-casing into the bed of a bod of water to extend above the surface thereo withdrawin water and sand from the easing and lining it to form the mold, fillin concrete into said mold to form a section 0 the structure, similarly sinking adjacent to said section a mold-casin withdrawing water and sand therefrom, lining it to form a second mold and filling the same with concrete repeating the said operation of molding the second section in molding successive sections and, during the progress of the work, removing the casing of each mold for repeated use and bonding the concrete of successive sections of the structure.

4. The method of constructing a sunken concrete wall, and the like, which consists in sinking a moldcasin into the bed of a. body of water to extend a ove the surface thereof, lining said casing to form the mold, filling concrete into said mold to form a. sec

tion of the structure, withdrawing the casing from its lining and again sinking it adjacent thereto and r e-lining it to,form a second mold, withdrawing that part of the first lining which closes the second mold to the first section to ermit concrete from the latter to enter sai' second mold, filling the sec ond mold with concrete to form a second section and bond it with the first, and repeating said operations of molding the second section and bonding in successive seclions.-

WILLIAM H. FAIIRNEY. Tn prcsuruce of- (hms. E. GAYLonn, ltALrH A. Smmnrnn. 

